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Selected:Root Cause Tree Analysis ARID (Active Reviews for Intermediate Designs)Fishbone Diagram Root Cause Analysis

Criterion	Operations Root Cause Tree Analysis	Architecture ARID (Active Reviews for Intermediate Designs)	Operations Fishbone Diagram	Operations Root Cause Analysis
Purposedifferent	For a problem with several suspected causes, the method builds a causal structure instead of a mere list. It makes visible how causes connect and where the strongest points of leverage lie.	ARID examines how well developers can work with a technical design. It focuses on a part of the system that can still be revised, between the architecture overview and the detailed specification.	When a problem has several possible contributing factors, the method sorts causes by cause areas. It prevents an initial hunch from blocking the view of other plausible drivers.	When a problem keeps recurring and the cause stays unclear, the method exposes the underlying mechanism. It separates symptom, guess, and robust explanation from one another.
Complexitydifferent	Medium	Medium	Low	Medium
Timedifferent	1-3 h	2–4 h review as a planning range; preparation and evaluation additional	30-60 min	1-4 h
Participantsdifferent	2-8	Designers, developers as users, and facilitation	2-8	3-8
Formatdifferent	Workshop	Workshop + async	Workshop	Workshop + async
Outputdifferent	Cause Tree, Evidence Notes, Countermeasures	Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions	Fishbone Diagram, Cause Categories, Investigation Backlog	Problem Statement, Cause Hypotheses, Confirmed Causes, Action Plan
Tagsno overlap	Root causeTreeIncidentQuality	ArchitectureEngineeringFeedbackValidationTasks	Root causeQualityOperations	Root causeProblem solvingQualityIncident

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